【摘要】 利用自由表面上的零应力边界条件，推导出地面上水平、垂直分量位移与到达地面的纵横波位移之间的关系式；再把二分量地震记录变换到慢度—频率域，并在已知表层速度的条件下求出到达地面的纵横波波场；然后把它们变换回到时空域，即可实现纵横波分离。唯论数据试算获得了很好的分离效果，实际资料处理也有一定的成效。更多还原

【Abstract】 Compressional wave can be separated from shear wave in the following steps: Use the zero-stress boundary condition on the free surface to deduce the re lation between horizontal or vertical-component displacement and the displacementof compressional or shear wave arriving at the ground surface ;. Convert the two-component seismic data into those in slowness-frequencydomain,then obtain compressional and shear wave fields on the ground surface byusing velocity in surface layer;. Reconvert them into time-space domain to achieve the separation.Theoretical computation brings excellent separation,and hopeful result can beseen in real data processing.更多还原